Pump



PUMP.

APPLICATION FILED MAY 22, 1918.

` 1,331,846. i Patented Feb. 24,1920.

2 SHEETS-SHEET li o o i A y l l 704/ r ATTORNEY H'. C. FRAHM.

PUMP.

APPLICATION FILED MAY 22, Isla.

1,381,846. Patented Feb. 24,1920.

2 SHEETS-SHEET 2.

INVENTOR WITNESSES ATTOR N EY UNITED STATES PATENT ormoni.

nnuaire. FimH-M, oF HALC'Ydn, onL'I'ro"aura.v

To all whom it may concern.'

v Be it known that I, HENRYiCfFRAHM, a

citizen of the UnitedV States, `residing at Halcyon, in the county ofSan Luis Obispo and State of California, have invented certain new anduseful Improvements in Pumps, of which the following is a speciflcation.f

This invention relates to pumps, and more particularly to a pump of thedoublegact-ing 4the piston,

Pe l l Y One of the main obgectsrof the invention is to .provide 'apumpof the character. de-

scribed of simple construction yand operation, and capable of pumping arelatively great Iquantity. ofwater in agiven time.

A A'further object is to provide a pump composed of a minimum of partsin which when moved in either direction, will force water into theoutlet "andl will simultaneusly draw water into the inlet, 'thusinsuring smoothness" of operation and avoid-1 ing 'unnecessaryvibration. v A still further obj ect is to provide al pump which maybereadily sembled for cleaning, repairs, and other purposes.'Y .f i

Further objects tailed description.

In the drawingsz Y c Figure 1 is a top plan view of a pump constructedin accordance with my invention partly broken away to show the `interiorconstruction.v

Fig. 2 .is a sectional vi tially on line 2--2 of Fig. 1`.

Fig. 3 is a centrallongitidin'al section. Fig. 4 is an end view takenfrom the discharge or outlet end, partly in, `section.V

The pump casing designated Vgenerally by A is provided with a centralcylindrical body-portion 1 whichis enlarged at one end will appear `fromthe deew taken substan- `to provide an inlet valve casing2 projectsisecinctin of Letters Patent.

` threaded to receive supportingV `secured therein. Each of thespidersis vpro.- vided with a central hub l1O'in which isse-V assembled ordisasy proximately,

being provided with spaced openings, spiders 9 cured the y'lower end'portion of avalve 'pin Harigel ca-p 12 `which slidably receives theneck 13`of a disk valve 14 which is normally forced downwardly-by a`coil spring A15., mounted about theV neck 'of the valve and l l Y v y ti 1 l Patented Feb. 24,v l1920. Application-med May 22, 191s. serial110,235,983; y Y f 5 .11 on heupperend of 'which is" threaded ,a i

confined between the'valvebody and"caip1-12.

,'These valvest fact to normally close the linlet openings betweentheinlet valve casing 2 and the inlet 'connection 5. The body 1 isfurther provided, at its forward end, with an outlet casing A17 'formed4'integral therewith, this Vcasing having 'a'lower portion 18 and anuppersubst'antial'ly rectangular portion 19, these ltwo portions of thecasing being separated by a central horizontal web upper andl ilowercompartments. This web is provided .adjacent e'achside `of the casing 17with an outlet openingr fan'd isthreaded lto -receive a spider 21similar to the spiders 20 which serves to divide the Vcasinginto i 9,which carries a pin 22 slidably` receiving theneck 23 `of a disk outletvalve 24hor- :n ially4 -h'eld yin seatedposition an expansion 'coilspring 25 Confined between thebody Vof the valveIandI the flange cap 2'6secured A These valves on theupper `end of pin 22. servev to.controlcommunication between the water receiving spaces =27 `and the.exhaust Lchamber 28.

A. pumpv cylinder `30 is mounted the casing A concentric withbody 1thereof. j Y

This cylinder corresponds in lengtln. ap-

to' theV interior length of the casing and fits lsnugly between the:upper arcuate web member 31 formed integral with the top portion of thebody 1 and inlet casing ingQ 'and the web 20 of outlet or exhaustcasing17, and the arcuate member 32 formed integralA with the Vlowerportions of the body 1 andthe lower porti'on 18 of the exhaust 30 fitstightly against the front closure plate 33 of the exhaust casing 17, asuitable packing ring or gasket 3.4@ being provided in the casingf17- As.willbe noted more clearly Vplate 33 for the reception of the forwardend portion ofthe cylinder so as to insure a `fluid tight closuretherefor.l The lower portion of the rearwardyend portion of the cylinder30 lits tightly .in the arcuatehead cured to the valve plate mid-waybetween the inlet valve 24 and serves. to divide, 1n

let compartments 39 and 40. As will be evi- Y dent, ,thecylinder 39alsogserves tov provide twowat'er passages 41 and 42 which extend alongeachvside of the cylinder-and communicate, at their forward ends,withthe water: compartments 27of the lower portion 18' of the casing'17.A closure plug 43 is ymounted'infthe .rearward end of cylinder 430.`This plug is Iof semi-circular outline, and has its greatest axisdirected `vertically thus .dividing the endv of the cylinder into twoequal parts, and forming a semi-circu lar inletJ opening-44 whichestablishes directfcommunication' between the rearward end ofthe-cylinderand the inlet compartment-39. As will beclear from Fig. 3,this plug is provided with a shoulder 43a which acts yas al spacingmember to hold the rearward end of the cylinder in vspacedV relation tothe vinner face of closure plate 3 for casing "2, thus. insuring freeflow of water --n either` direction through opening 44. CylinderBOisfurther provided, .adjacent Aits Yforward pend, with an opening- 45which communicates directly with the outlet water compartment 27 withwhich the water passage 41 communicates. Suitable elbows 46 communicatewith the exhaust compartment 538 .of't'hezexhaust valve casing 17 Yso asto permit the water'to be conveyed tothe usual 'alrdome orv headwithwhich the discharge pipefcommunicates, or if preferred, the wa- -ter:may be discharged directly Vfroml the 'casing 17. To permit readyaccessto the initerior -of the exhaust valve chamber,

plate 47 'is secured on the upperV end of the casing17 yby capscrews 48so as Vto-bedetachable therefrom. 1 j

A piston 49 fits snugly in the cylinderjBO and: is adapted to bereciprocated therein by meansl of thepiston' rod 50 which may beconnected to lany suitable operating mechanism. When thepistonis drawnoutwardly or toward thevfront of the pump casing A, the inlet valve 14which is positioned within the inlet'compartment 39 will Aberaised'soastopermit waterto be drawn into this compartment and into thecylinderini front of the piston 49. When the'piston'ismoved rearwardly inthecylinder, the valve in inlet compartment 39 will be closed and the'waterlwlthinfthe cylinder 30-in back of the piston will' be yforced outof thecylinder through lthe opening 44 into'thecompartment 39, this assagewith v'sults in' unseating the exhaust valve 24 so as to permit lthewater to flow into the exhaust chamber 28, and through the outlet 5lthere- -pfintothe elbow 46.'` lAlso,:du1ing this'rearl By removing theend plates 'ofthe casing,

'a cap v I claimas new and ward movement of the piston 49, a vacuum willbe formed in the cylinder 30 in front of the piston thus causing theother inlet valve 14 to be raised or unseatedso as to admit waterintothe inlet compartment 40 and into the cylinder 30 vthrough the waterpassage 41'V andthe outlet compartment v27 *with which i this passagecommunicates. When the piston is again moved toward the front of thecasing, this water' will be forced through the opening. 451into'thecompart ment 27," so asto unseat the other exhaust valve 24, the waterthen owing into exhaust chamber 28l and through the openings 5l thereofand elbows V46.' *By this"construction, when the piston ofthe pump ismoved in either direction, water will be forced into `the exhaustchamber28, andequal'quantity Of-water will be VVsimultaneously drawninto the pump casing y,so as to be forced'into 85 the exhaust chamberL'when the piston is V movedvin the opposite'directionf This'insures'apumpwhich is'capableof pumping a relatively great quantity of water orother fluid within a comparatively short time,`and 90 also serves ltoeliminateunnecessary or 'Y vibratiomias the piston is at alltimesworking against-a cushion formedby theiwater beingexpelled from thepump'.

the piston may .be'readily'detac'hed from the pistonrod 50, by rmeansYofA any suitable"l instrument, the closure plugY 43 being irstremovedfromvthefend ofthe cylinder; f Also, the cylinder may-'bereadilyremovedfrom the casing, thus permitting the pump Yto be quicklyV andeasilydisassembled for cleaning, repair and similar purpose. v l i Theforegoing description'and the draw ings, have referenceto' whatV maybeconsidered the preferred' or approved, iformV of my invention. {ti/stobe unnderstood'that'l may make such changes in constructionandarrangement and" combinationofpar-ts, materials, dimensions,"etc1,as-*fmay prove 'ex- 110 pedient and` fall vwithin the scope'o'f theappended claims.-v '1 'z' Having thus described my invention what desireto'secure by Letters l?atentis:--l l 1 f e "S j 1. Ina device "ofVthecharacter described, the combination of a pump casing consisting ofa centralcylindrical body portion pro- ,videdV` with a cylinderextending there-V through and projecting therebeyond, a dividedoutletcasinglformed atone endof said body and extending thereabove, thus'forming a nplurality of compartments, valve means for each compartment,a divided intake valve casing uponthe opposite end of said body anddependingjtherebelow, thus formingapair of compartments insaid Vintakecasing, valve means in said intakeV casing, means for `forming`communication -between said cylinder` and "body portion, and

l through said cylindrical body and eXtendpiston reciprocalywithin saidcylinder casing, all for the purposes set forth.

2. In a device of the class described, the

combination of a cylindrical body portionA having an intake valve casingat one end thereof and an outlet casing at the opposite end thereof,said intake valve casing having a horizontal valve plate, valve'memberscarried by said plate, a partition member carried by the central portionof said valve plate and having an arcuate head on its upper portion, apump cylinder extending ing into each of said casngs,`said pump cylinderbeing smaller than Vsaid cylindrical body to form passage Ways upon theexterior of the cylinder, said cylinder resting upon said arcuate head,thereby forming a pair of compartments 1n said mtake casing,

a horizontal web carried within said outlet casing and having an arcuateWeb thereon, said pump cylinder engaging said last mentioned arcuateWeb, thus forming a plurality of compartments in said outlet casing,valve means carried by said horizontal web, Whereby a valve means Willcommunicate with each of saidlast mentioned compartments, intake meansconnected to the intake casing, valve means connected to the outletcasing, and a piston reciprocally mounted within said pump cylinder.

In testimony whereof I affx'my signature in presence of two Witnesses.

HENRY C. FRAHM." Witnesses: i

T. R. PHILBRICK,

ELMER C. WHITE.

